From patchwork Fri Jul 28 13:19:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 108886 Delivered-To: patch@linaro.org Received: by 10.182.45.195 with SMTP id p3csp444612obm; Fri, 28 Jul 2017 06:20:34 -0700 (PDT) X-Received: by 10.84.169.36 with SMTP id g33mr8101791plb.52.1501248034820; Fri, 28 Jul 2017 06:20:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1501248034; cv=none; d=google.com; s=arc-20160816; b=lcdnArPaP45iZkoCQgh57BlzfOjHq7HxJEgebBdVUPDuCLPd1I6au1d/Yf/SEjrL3D yYKAPwAijHxGI+6fj+3vVtYhBCKzlpDJlZ+UcpL08/kYGUslzdwv0Bce+1AN8NwWCVxP ppGmBD9OdCoOJs6dTOHtqTZPpCiAc1MklP5Bzqi36c1AhFZqRq947FX6sUASXMT/5kxc vUUVvFZ0EdCcaznDICu380l+OvFXAGRdfur1YSq/DAuO6YYrUmOIxq9gmii9BE3fNkyX 1KxB7e9KanjaHQabpCgZbPfmF2IpqWw8RJ01QwpMKwwvoWTeifWlyiv/rn/ZHdLsTBAL VzJA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from :arc-authentication-results; bh=opzE3ZVbWfQ9xYbbl2YOFGfCvDNRp5ePuf6A4vJsYKU=; b=ruKRbDinrDnqyZskFBvnaDTbpuJFtUcMRCcCNth1nBXAy0EnyJ6QoqOzd3TbF8lhTD hFuXpSjJeFX5okdxUw9v4QiQ8imdm01eUzN8cOhra86iqv8H3LRnoegS3rbIRQVERuUf L96O7WERP6xVu6WqFyDGW5WAlJ4XVZ9gLB1AaQcOS1qaFvqNBp9RhNpKHZJJJXe74814 MqJ09/2dygCRMVgdGEStWEJWGea9wNZH++hCDYTFgd//t20J5wIwjPe0jKGsWHevQRCF Xvjf1c2muh9zJTIdGkKjGo1sCX71AMifLQUZFftFxfYkPTLACnxQpVssHJ3Z72mxNqQm sT9A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-samsung-soc-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id s8si12580327pgn.630.2017.07.28.06.20.34; Fri, 28 Jul 2017 06:20:34 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-samsung-soc-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751877AbdG1NUd (ORCPT + 4 others); Fri, 28 Jul 2017 09:20:33 -0400 Received: from mout.kundenserver.de ([212.227.126.131]:63934 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751673AbdG1NUc (ORCPT ); Fri, 28 Jul 2017 09:20:32 -0400 Received: from wuerfel.lan ([78.43.238.10]) by mrelayeu.kundenserver.de (mreue003 [212.227.15.129]) with ESMTPA (Nemesis) id 0Lm8NJ-1eA8on1TCj-00Zdjg; Fri, 28 Jul 2017 15:19:56 +0200 From: Arnd Bergmann To: Joerg Roedel Cc: Arnd Bergmann , Marek Szyprowski , Kukjin Kim , Krzysztof Kozlowski , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH] iommu/exynos: prevent building on big-endian kernels Date: Fri, 28 Jul 2017 15:19:19 +0200 Message-Id: <20170728131954.213595-1-arnd@arndb.de> X-Mailer: git-send-email 2.9.0 X-Provags-ID: V03:K0:/vpcgCcO/ZUaQwZxcAEnr8q0WkIpPZzfopeMbLAfKGyAzb4okDB fZi+Hcaei4rPTTupG0JZjTHsRLDg6xl2+5av6J9soaxgr2cqZIVNtpCk1sYOUzUg0piqMWo LBI+8Jv6E6JAjA5QEN8FD+WRc69CYmYyJdfoBieB26SAh1AmRItC/FzY4LPHNINBAtfwT2j VmyBRUqeesRFZWMZzgdoQ== X-UI-Out-Filterresults: notjunk:1; V01:K0:4QEoha3eRKw=:iCzT2BicbfWFaf6eocneM+ Jm9KQ0+Ab3F9DFXooLEEpEnEvUQkHfKfNwK2Ik290acktqmAUg11A+/Hd4v1zT5mTKr96a8WU aKl5AWsmDLUbChasu0bxIZRBE3gQkbJnYqunvBte4H7PDnl/yjFTxX99ZD0tZioQjg+VOOG1s luxpS7mZioUb6rE1uc+rFdpqs6pQvUysLRVjqdHXA6wglR1opOCU5BF5EJwG1DT7SN3H2liIV Ck9jX+Hh/91UUm2URSCDinjjsAU9bpcDrFuB8oSzTzX52SrsQoggdUuG3iCHxi4Bw5xH0ucrr G7ZISZQLn4wHKvir2dFRtyT6vPln8PPLjK1vhL5w+D9BjekuOIAygjVnNjc24VSlwzXWklDvz PhQiNmgx6qznftFOdN6QIdVybPunnIswhROQkyz/jOrMIIrZmYMfpgibXt39llvtqIr2MGsVG RIMw125/qA07Ppxt0Oz8B7XY73pR2p5e8jhQN0HI0KvqMPSIeltEUMdvbKvBBaP1iSo3VaXz3 dw6KJF1GMxHyhImTWt5gHrhDkvEFD70ngTfXzfia2QfvAcWEmropNsI7E0vtfHPTNFYS5F2Un NJJQ2VeSt/VRojZ8+RY20ocuOCP21qEw+gqkYPsgcnmjzay8DgL7YeCF5H9sHOqqcrh2Mr5Xt lyQdE6Qvscxh6Q2tupzNe+CP/f5e2wVIISqICDHdB+kb1KCQQxUTDdIUW68DWZvfz4xf+MJYP wMyhrssk2DpRy30JaQ8Tv3VgAjXyiPtdlKaS4g== Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Since we print the correct warning, an allmodconfig build is no longer clean but always prints it, which defeats compile-testing: drivers/iommu/exynos-iommu.c:58:2: error: #warning "revisit driver if we can enable big-endian ptes" [-Werror=cpp] This replaces the #warning with a dependency, moving warning text into a comment. Fixes: 1f59adb1766d ("iommu/exynos: Replace non-existing big-endian Kconfig option") Signed-off-by: Arnd Bergmann --- drivers/iommu/Kconfig | 1 + drivers/iommu/exynos-iommu.c | 4 ---- 2 files changed, 1 insertion(+), 4 deletions(-) -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Reviewed-by: Krzysztof Kozlowski diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index f73ff28f77e2..c5d80fe3dab9 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -253,6 +253,7 @@ config TEGRA_IOMMU_SMMU config EXYNOS_IOMMU bool "Exynos IOMMU Support" depends on ARCH_EXYNOS && MMU + depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes select IOMMU_API select ARM_DMA_USE_IOMMU help diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index b7aebaf28b82..c6b69e91132b 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -54,10 +54,6 @@ typedef u32 sysmmu_pte_t; #define lv2ent_small(pent) ((*(pent) & 2) == 2) #define lv2ent_large(pent) ((*(pent) & 3) == 1) -#ifdef CONFIG_CPU_BIG_ENDIAN -#warning "revisit driver if we can enable big-endian ptes" -#endif - /* * v1.x - v3.x SYSMMU supports 32bit physical and 32bit virtual address spaces * v5.0 introduced support for 36bit physical address space by shifting